#include <iostream>
#include "swap.h"
using namespace std;
int main()
{
	int a=10,b=20;
	swap(a,b);
	system("pause");
	return 0;
}
void swap(int a,int b)
{
	int t=a;
	a=b;
	b=t;
	cout<<"a="<<a<<endl;
	cout<<"b="<<b<<endl;
	return;
}